Liquid-crystalline medium and electro-optical display

US9434882B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Mark Goebel · Darmstadt, DE
• Atsutaka Manabe · Bensheim, DE
• Elvira Montenegro · Weinheim, DE
• Detlef Pauluth · Ober-Ramstadt, DE

Key dates

• Filing date: Nov 8, 2011
• Grant date: Sep 6, 2016
• Expiry date: Nov 8, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2019/3027
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a liquid-crystalline medium having a nematic phase and negative dielectric anisotropy which comprises a) a compound of the formula (I), b) one or more compounds of the formula (II) and c) one or more compounds selected from the group of the compounds of the formulae (III-1) to (III-4. The liquid-crystalline medium is useful in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PALC, FFS or IPS effect.